Stearic acid is a saturated fatty acid commonly found in animal and vegetable fats. It is also used in various cosmetic, food, and pharmaceutical products. However, there are several other terms that can be used interchangeably with "stearic". For instance, octadecanoic acid, one of its chemical names, is often used in scientific literature. Other synonyms include n-octadecanoic acid, stearinic acid, and n-octadecylic acid. Stearates, the salts and esters of stearic acid, are also commonly used in various formulations. It's important to note that when using synonyms, the exact chemical structure and properties should still be considered to ensure proper use and application.